Grease-cup.



E. TYDEN.v

GREASE CUP.

APPLICATION man rm. 5. ms.

Patented Mar. 12, 1918.

STAES EMIL TYDEN, or EVANSTON ILLINOIS GREASE-cur.

e t k 9. m it may con ern:

Be itknown that 1, E1111 TYDEN, a citi- Zen Qtthe United States, and resident of Eyanston, in the county of Cook and State p 'tqthecbearingto bel lubricated. It

ondemn; the elements andfeatures of construction shown and described, as indicated a inthec lairns. 1 i a F In, the drawings a al section of a grease Figural is an aim cu erhbodyingthisinvention. a

,2 is a transverse section at the line, ,HQIL 1- i M g. 3 is a section at the l ne, 3-3, on

a Fig. eiis'a yiew similar to 'Flg. 3, showing the: container, of modified form; in crosssect'ion."

Eigl is, a similar iew showing another med cat n 30 Fi'gQGflis a sirnilar View showinga fourth med fi f rm- The grease cup shown in the drawings comprises a, base memben A, having a stem, A by which it is connected with the bear iri g'sto be lubricated and having a discharge duct,{a ,through that stem opening up into theenlarged chamber, a, of the base which open'at the p er end for attaching the rease chamber. or container,;B. The base has, agcylindrical threaded flange, A to whiclilthe Qontainer, is screwed, and at the base of which it is stopped against a shoulder, against which it is designed tojjge screwed'tlght. For guarding agalnst to stab e l t here s P v ded a r fi' n ee ng; vice ersist n 19f, a p 1 Specification of Letters Patent.

th wCidehtal unscrewing of the container Patented Mar. 12, 1918.

' a li ation filed February 5, 131 Serial- No. 76,260.

C, which may be made of wire as shown, or

may be made of other form coiled so asto fit Within the open end of the container and to be retained in position therein by one or more spurs,as illustrated, two, one at each end of the spring,such spur or spurs, G protruding out through an aperture, 72 made through the threaded portion of said end of the container, and adapted to pro-i trude far enough to engage an aperture or notch, a in the threaded flange, A of the base, the relative position ot the apertures, a and b inltlie threaded portions of the two parts which are screwed together being such that said apertures will register and permit the spur to protrude through them both and engage thejtwo parts together before the container becomes unscrewed from the base. Preferably this registration is made to occur when the parts are engaged to the extent of one or two threads, but the distance may be more or less, the purpose and result being that the spring catch, C,

engages the two members together to a sufficient 'cxtenttoprevent them frornbeing unscrewed by thejolting, but not sobut that the container can be readily screwed and unscrewed by hand, such engagement occurring in tinieto prevent separation of the container. The spur, C is torined so as to engage the thread of the basefrictionally, and it may be formed so as to affect such engagement strongly enough to practically prevent the unscrewing of the container: by jolting even. without the more positive engagement efi'ected by means of theregis tered apertures of the two parts.

For expelling thegrease from the container it is provided'with a piston or 01- lower, D, fitted to the cavity of the container for traveling axially therein with a sufiiciently tight fit which may be eifected by any customary means of packing, suchas the leather disk or ring, E, shown as forming one member of the piston orfollhwer. The piston is designed to be advancedaxially and retracted in the chamber of the container by means of athreaded steinor shaft, F, journaled' and longitudinally stopped in the closed (611d, B of the container, said screw shaft being formed with akflange, F

stock atithe thinnest part andsuflicient thread at 'thethi'ckest partrfor efiective sengagement with "the base. In Fig. '6, a form r 1' lbaek; of the portion, f -which"isatoffor n f f the journalyof the shaft inthe'head, the

' f screw shaft being inserted through the head a short distance of the p 'en end'whic'h is cir-- ocular-tor thepurposeofreceiving the inte-,

' rior thread by Which. the container is se- Aedesirable' form is that shown in Figs. 1

V and 3, the'container being made of sheet: j me'tal stampedor drawn into the form show-n, 'b in g 'hexagm ial' in cross-sect on from" the upperolosed enddowngto within a cured to the base, the circle which defines the interior'lofithe circular end' portions being. .ofprcour'se 'circu1n'scribedabout the' Jhexagon which defines "the interior ofthef V upper portion, so that the piston or, follower i [maybe freely entered through'theoircular endinto theghexagonal portion which it'fits. f jAnotheri quite desirable form is shown'in' V5 in which thefcontainer above the gthreadedportion-at the open. end, instead 'i V ofbeing. angular, is slightly flattened from 30 the circular form so as to beoval, the-diner jence betweenthe longer and shorter diamev ters, however, being'less than the thickness j ofthemetahsothat after beingflattenedfor drawn into the flattened form, it can be threaded at the open end, leavingsulficient substantially-the same as that shown in Fig. 5iisillustrated,but designed to'be drawn so asto be' icircul'a'r at the open threadedend withthefull thickness-of the metal available for the thread, but oval orflattened V above the threaded portion, the longer. di-

ameter. of the oval portionfbeingj the uniformdiameter of the circular portion,"

7 4 which represents the container: as stamped .f or'drawnirom sheet metal being formed circular in cross-section for a short distance I j atthej open threaded end and, above theiporv tionformed with one or more'longitudinal i inwardly-impressed ribs or corrugationgb of'the'container. V I "In all theser torms'shown, it'is preferable v. 3a; central boss,fD which extendsdownf I through or past thespring catch device, 0., fl so as to stopupon-the bottom ofthe cavity,,

' (1,101 gthe baseand arrest the feeding: move? It will be'understood that the piston or tol lowerfineach case is conformed to the cross: T sectionalffor'ni of; the chamber in which'iit moves above the T circular threaded portion to: provide; the piston or" follower; D, "with In combinationwith V discharge duct leading from it; a threaded o r r nent'lvof the piston before-itis' crowded against the spring,iand this boss'also serves the further purpose of expelling the grease.

which wouldotherwise remain unexpelled inthe upper open end? cavity ofthe base from the. level ofthe top of the spring to the bottom. of the cavity. v

;Iclaim:'

a base having a cylindrical 7 flange'lan d an, annular stop shoul derat tllQbitSGflOf-tl'IB flange; a cup-shaped container; threaded at f the )pe'ng end; for 1 screwing to {the-base and being stoppedfon' the annular {stop "shoulder ofjthe f base a spring lodged; Within theinn'er of the two members thus; screwed together, said inner the aperture; the

member having an v aperture through its threaded part, f the 'sprin jhaving, a spur or "finger projet-iting through outer member having one aperture through its threaded part; positionedj iforjengage ine'ntb'y the spi rlof the spring In combin'atiqn with albaseihaving fqi' discharge ductan'd an enlarged ca vityfr'om which the' duct fleads,' 'i a. containerfhaving one end open and screwed to the base,,the

base having. jstopi shoulder against which the container isadaptejd' to be screwed tight, a spring lodged within the inner of the two members, saidinner' member having an aperture through itsthreaded part and the spring .haVinga spur orfinger projecting through the aperture, the'outer member having one aperture through its threaded part positioned for engagement by said spur at'thelposition ot"the. containerat which it isfonly partly fscrewedho'rne to the stop shoulder, said spring being formed so as tobe open-,at the central portionlof thebase cavity; a threaded shaft journaled in and longitudinally stopped in" thehead which closes one end of the container, and arIJISlLQH or follower in-itschamber throughwhich the threaded shaft is screwed for V driving the follower longitudinally 0f the f Another desirableform is sho'wnin Fig. i

chamber by rotating the threaded shaft, 7, saidipiston or follower having'a central boss on "the side toward the base, 'dimens sioned ffor-pa'ss 'ng through the} open center of thespring and stopping upon the bO jtom of thefcavityof thebase by the time the follower reaches the. spring at the position of with registered apertures; V In combination with a base "having a themember's at whichthe spring is engaged discharge ductfand threaded for attachment t'ainer 4 open at oneend and threaded {01K attaehmentftofthe base "around said-1 enlarged or" I'c'ontainer, and having an enlarged :cav ty from which the duct leadspa con- 7 cavity; a pi f riin"thecontainer enga gedfnon-rot'atably therewith {a threaded shafti journal'ed and longitudinally stopped in the head of the container, screwed through enter and approximately fully occupied the {the piston and having exterior means for enlarged cavity of the base while engaged i rotating it, the piston having at the side with the threaded shaft. 10

toward the base a boss into and through In testimony whereof I have hereunto set a which said shaftis screwed which is radially my hand at Chicago, Illinois, this 1st day of continuous from said shaft to the outer cir- February, 1916. cuinferenoe of said boss which is adapted to EMIL TYDEN.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

